Pen



FIG. 1 is a perspective view of a first embodiment of a pen;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof,

FIG. 4 is a left view thereof;

FIG. 5 is a right view thereof,

FIG. 6 is a top view thereof; and

FIG. 7 is a bottom view thereof.

FIG. 8 is a perspective view of a second embodiment of a pen;

FIG. 9 is a front view thereof;

FIG. 10 is a rear view thereof:

FIG. 11 is a left view thereof:

FIG. 12 is a right view thereof;

FIG. 13 is a top view thereof; and,

FIG. 14 is a bottom view thereof.

The broken lines shown in FIGS. 1-7 are included for the purpose of illustrating environmental structure and form no part of the claimed design.

The stipple shading as used in this application is a drafting convention to show contrast with adjacent surfaces. 

CLAIM I claim the ornamental design for a pen, as shown and described. 